CH293618A - Process for the preparation of a leuco-sulfuric acid ester salt of an anthraquinone-azo dye. - Google Patents
Process for the preparation of a leuco-sulfuric acid ester salt of an anthraquinone-azo dye.Info
- Publication number
- CH293618A CH293618A CH293618DA CH293618A CH 293618 A CH293618 A CH 293618A CH 293618D A CH293618D A CH 293618DA CH 293618 A CH293618 A CH 293618A
- Authority
- CH
- Switzerland
- Prior art keywords
- leuco
- sulfuric acid
- azo dye
- acid ester
- anthraquinone
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B9/00—Esters or ester-salts of leuco compounds of vat dyestuffs
- C09B9/02—Esters or ester-salts of leuco compounds of vat dyestuffs of anthracene dyes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
<B>Zusatzpatent</B> zum Hauptpatent Nr. 287872. Verfahren zur Herstellung eines Leukoschwefelsäureestersalzes eines Anthraehinonazofarbstoües. Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Herstellung eines neuen
EMI0001.0008
welches dadurch gekennzeichnet ist, dass man diazotiertes 1-Aminoanthrachinon mit 5-Aceto-
EMI0001.0011
kuppelt und den entstandenen Azofarbstoff zur Leukoverbindung reduziert,
diese durch Behandlung mit S03 oder S03 abgebenden Mitteln verestert und den Ester in das Na triumsalz überführt.
Die Überführung des Küpenfarbstoffes in den Leukoschwefelsäureester geschieht in der Weise, dass man z. B. den Farbstoff durch ein Reduktionsmittel, das wohl die Chinongruppe, nicht aber die Azogruppe reduziert, in die Leukoverbindung verwandelt und diese mit S03 oder einer S03 abgebenden Substanz, wie z.
B. Chlorsulfonsäure, in Gegenwart einer Leukoschwefelsäureestersalzes des Anthrachi- nonazofarbstoffes der Formel acetylamino - 2 - (4'-methoxy) -phenyl-1,3-benze triazol der Formel tertiären Base, wie z. B. Pyridin, und in Ge genwart eines Metalles, wie z. B. CU oder Fe, verestert.
Der neue Leukoschwefelsäureester zeichnet sich durch eine gute Affinität zur vegetabili schen Faser und durch sehr gute Echtheiten aus.
<I>Beispiel:</I> In ein Gemisch von Pyridin und S03, das durch Zutropfen von 36 Teilen Chlorsulfon- säure in 180 Teilen Pyridin vom Siedepunkt 125 bis 128 C hergestellt wurde, trägt man ein Gemenge von 24 Teilen des Azofarb- stoffes, der aus dianotiertem 1-Aminoanthra- chinon und 5-Acetoacetylamino-2- (4'-methoxy)- phenyl-1,3-benzotriazol erhalten wird,
und 14 Teilen Eisenpulver ein und verrührt bei 40 C bis zur Beendigung der Veresterung. An schliessend trägt man die Mischung in eine Lösung von 55 Teilen Soda und 1000 Teilen Wasser ein und destilliert das Pyridin ab. Nach dem Abfiltrieren des Veresterungsrück- standes erhält man aus dem Filtrat den Ester durch Aussalzen mit Natriumchlorid.
Das neue Leukoschwefelsäureestersalz ist in Wasser unter Bildung einer orangen Lö sung löslich und liefert durch geeignete Oxy dation einen gelborangen Küpenfarbstoff. Nach dem für diese Farbstoffklasse üblichen Entwicklungsverfahren wird auf der Faser ein Goldgelb mit sehr guten Echtheitseigen schaften erhalten.
<B> Additional patent </B> to main patent no. 287872. Process for the production of a leuco-sulfuric acid ester salt of an anthraquinone-azo dye. The present invention is a process for producing a new one
EMI0001.0008
which is characterized in that diazotized 1-aminoanthraquinone with 5-aceto
EMI0001.0011
couples and reduces the resulting azo dye to the leuco compound,
this esterified by treatment with SO3 or SO3 releasing agents and the ester converted into the sodium salt.
The conversion of the vat dye into the leuco sulfuric acid ester is done in such a way that one z. B. the dye by a reducing agent, which probably reduces the quinone group, but not the azo group, transformed into the leuco compound and this with SO3 or an SO3-releasing substance, such as.
B. chlorosulfonic acid, in the presence of a leuco sulfuric acid ester salt of the anthraquinoneazo dye of the formula acetylamino - 2 - (4'-methoxy) phenyl-1,3-benzene triazole of the formula tertiary base, such as. B. pyridine, and in the presence of a metal such. B. CU or Fe, esterified.
The new leuco sulfuric acid ester is characterized by a good affinity for vegetable fibers and very good fastness properties.
<I> Example: </I> A mixture of 24 parts of the azo dye is added to a mixture of pyridine and SO3, which was prepared by adding 36 parts of chlorosulphonic acid in 180 parts of pyridine with a boiling point of 125 to 128 C , which is obtained from dianotized 1-aminoanthraquinone and 5-acetoacetylamino-2- (4'-methoxy) -phenyl-1,3-benzotriazole,
and 14 parts of iron powder and stirred at 40 ° C. until the esterification is complete. The mixture is then introduced into a solution of 55 parts of soda and 1000 parts of water and the pyridine is distilled off. After filtering off the esterification residue, the ester is obtained from the filtrate by salting out with sodium chloride.
The new leuco-sulfuric acid ester salt is soluble in water to form an orange solution and, through suitable oxidation, provides a yellow-orange vat dye. After the development process customary for this class of dyes, a golden yellow with very good fastness properties is obtained on the fiber.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH287872T | 1950-07-21 | ||
| CH293618T | 1950-07-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH293618A true CH293618A (en) | 1953-09-30 |
Family
ID=25732771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH293618D CH293618A (en) | 1950-07-21 | 1950-07-21 | Process for the preparation of a leuco-sulfuric acid ester salt of an anthraquinone-azo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH293618A (en) |
-
1950
- 1950-07-21 CH CH293618D patent/CH293618A/en unknown
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